Insulating blanket



R. H. RQVER INSULATING BLANKET Filed July 14, 1944 Feb. 8, 1949.

Patented Feb. 8, I949 Richard H. Rover, Roselle,

N. 1., assignor to FOI- ter Wheeler Corporation, New York, N. Y., a corporation of New York Application July 14, 1944, Serial No. s44,ss7

., 4 Claims. 1 This inventionrelates to insulating lining and more particularly to insulating blankets for use in lining walls, ducts, furnace walls, fines, and the like.

The invention provides an insulating blanket of high insulating value and capable of bearing a substantial load without becoming compressed or distorted. Application of a covering to the blanket of the present invention may be made without affecting the insulating qualities thereof and without distorting or compressing the blanket.

The invention will be understood from the fol- Like characters of reference refer to the same parts throughout the several views.

Referring to the drawing, the invention, as shown, comprises a layer of compressible insulating material in such as asbestos, rock wool, mineral wool, or the like. The layer of material I ii is positioned between retaining sheets Ii and I! which sheets, as shown, comprise expanded metal i screens. The sheets-ll and i2 may be of other flexible material such as wire, metal, or cloth which material preferably extends over the ends and side edges of the layer of material ill as well as over the top and bottom surfaces.

Spacing blocks 13 are positioned in the space between the sheets II and I! in which the layer of insulating material I is disposed. The blocks II are of a solid non-conducting insulating material and, as shown, are substantially cubically shaped and of a thickness substantially equal to the thickness of the layer of insulating material Ill. Surface ll of one of the sides of the blocks, as shown, is adjacent the inner side of the sheet ll, while the'surface ii of the side of the block a opposite the surface it is adjacent the inner side of the sheet l2. Blocks l3 space the sheets I l and i2 apart a predetermined distance and prevent the layer of insulating material ill from becoming' compressed to a thickness less than the thickness of the blocks when the insulating blanket of the present invention is subjected to a weight bearing on the screen sheets ii and i2. Other than cubically shaped blocks may be used, it

merely being required that the blocks used be 5 so shaped as to have two surfaces spaced apart -a predetermined distance, similar to surfaces ll and II of the blocks is. The blocks 13 are disposed'in spaced rows, as shown, and are spaced from one another in said rows. The number. of blocks used and the arrangement thereof should be such as to hold the sheets II and II a predetermined distance apart and prevent the layer of insulating material in from being compressed.

Insulating material 10, which is packed closely around the blocks l3, holds said blocks in position but the blocks, to prevent movement thereof, may be secured to the screen sheets II and I2.

Tie wires l6 *xtend through the layer of insulating material l0 and are threaded through the sheets II and i2 toflrmly secure said sheets and layer of insulating material in relationship to each other and the blocks II.

The spacing block l3 illustrated in Figs. 1 and 4, of the drawing is somewhat similar .to the blocks l3 shown in Figs. 1 to 3. The block i3 has a passage l'l therethrough to receive a bolt, nail or other fastening means it so that the insulating blanket of the present invention may be secured to a wall, a duct, flue or other structure to which it is to be fastened and thereby set in relationship to said structure. It will be understood that the blanket may be secured by means other than the apertured block adapted to receive a bolt, nail or other fastening means It.

The structure of the present invention provides a flexible insulating blanket having high insulating pro erties which may be applied to walls of various shapes and contours and which may be subjected to a load, such as the weight of a refractory material applied to the retaining sheets of the blanket, without becoming compressed or distorted. Since the spacer blocks are of a solid non-conductive or insulating material, the insulating qualities of the blanket are not decreased by said blocks.

It will be understood that changes may be made in the form, location and relative arrangement of the several parts of the insulating blanket disclosed without departing from the principles of the invention. Consequently, the invention is not to be limited excepting by the scope of the appended claims.

What is claimed is: 1. An insulating lining comprising spaced meallic screens, a layer of fibrous insulation be- 3 tween said screens, means extending between the screens and through the insulation for securing the insulation and the screens together to form a blanket, and a plurality-of blocks of solid insulating material, said blocks being arranged between the screens in spaced rows and spaced fronn one another in said rows, the blocks having a substantially fiat surface at opposite sides thereof, one of said surfaces engaging one of the screens and the opposite of said surfaces engaging the other screen thereby limiting movement of the screens toward one another and insulating said screens from one another.

2. An insulating lining comprising spaced metallic screens, a layer of fibrous insulation between said screens, means extending between the screen-s and through the insulation for securing the insulation and the screens together to form a blanket, and a plurality of cubically-shaped blocks of solid insulating material, said blocks being arranged'between the screens in spaced rows and spaced from one another in said rows, the surface of one of the sides of the blocks engaging one of the screens and the surface of the side of the blocks opposite said one side engaging the other screen thereby limiting movement of the screens toward one another and insulating 1 Said screens from one another.

3. An insulating lining comprising spaced metallic screens, a layer of fibrous insulation between said screens, means extending between the screens and through the insulation for securing the insulation and the screens together to form a blanket, and a plurality of cubically-shaped blocks of solid insulating material, said blocks being arranged between the screens in spaced rows and spaced from one another in said rows. the surface of one of the sides of the blocks engaging of the blocks opposite said one side engaging the other screen thereby limiting movement of the screens toward one another and insulating said screens from one another, at least some of said blocks having a passage therethrough adapted to receive fastening means for mounting the lining in position.

4. An insulating lining comprising spaced metallic screen sheets, a layer of fibrous insulation between the sheets, and a plurality of blocks of solid insulating material between the sheets arranged in spaced rows and spaced from one another in said rows, said blocks having opposite substantially flat surfaces adapted to engage the surface of said screens adjacent the insulation thereby limiting movement of said screen sheets toward one another and insulating said screens from one another.

RICHARD H. ROVER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 720,929 Johnson Feb. 17, 1903 1,387,391 Hall Aug. 9, 1921 1,703,558 Sutter Feb. 26, 1929 1,822,987 Cooper Sept. 15, 1931 1,972,592 Jacobson Sept. 4, 1934 2,159,300 Tashjian May 23, 1939 2,184,482 Austin et al. Dec. 26, 1939 2,282,293 Christensen May 5, 1942 2,329,366 Weill et a1 Sept. 14, 1943 2,376,653 Boyer May 22, 1945 

